OSHA said it observed two DiMeo Brothers Inc. employees working in a 25 foot-deep trench without adequate cave-in protection during an inspection in April. The workers were installing storm sewers for the Village of Glenview.

“Trench collapses can occur suddenly, and it is only a matter of minutes before a worker becomes trapped,” Angeline Loftus, OSHA’s area director for Chicago North, said in a statement. “DiMeo Brothers failed to meet their responsibility to adequately protect employees working in trenches.”

OSHA said the company also failed to provide life jackets to employees and fall protection.

DiMeo Brothers was previously cited by OSHA in 2010 and 2013. The company has 15 days to comply, request an informal conference with OSHA’s area director, or contest the findings.